Ryan then tries to explain why he brought it up, telling her: "But if you post something - I mean, even in my life - if I post something…"

"If I post something then that’s what I’m willing to share at the moment," Ariana replies. "But it doesn’t mean then you, Ryan Seacrest, with millions of followers, are entitled to more information."

"It doesn’t?"

"No,” she abruptly hits back.

Ariana Grande (Image: Splash)

Ariana and Mac pictured last month (Image: Splash)

(Image: WireImage)

After the interview aired the star was soon called out on Twitter for being "rude", and it even led to some of her loyal fans arguing with each other over the social media site.

"I get Ariana wants to keep her relationship with Mac private but there's a difference between shutting down rumours and just being rude," one wrote.

While another said Ryan was just doing his job, sharing: "Ariana knew what situation she was going to get in for posting a pic like that she didn't have to be rude to Ryan he was just doing his job."

However, others came to her defence, saying she clearly felt uncomfortable talking about her private life live on air.

It's not the first time the singer has been accused of being rude after she was forced to apologise last year after she was caught on CCTV ranting: "What the f**k is that? I hate Americans. I hate America!”